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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A dependent random sample from two normally distributed populations gives the following results:
n = 20,
= 26.5,s2 = 3.2
-Calculate the margin of error for the given data assuming 95% confidence level: nx = 250
x = 0.65 ny = 360
y = 0.78
Standard Normal
A normal distribution with a mean of zero and a standard deviation of one, commonly used in probability theory and statistics.
Random Variable
A variable whose values are outcomes of a random phenomenon and are subject to variability, characterized by a distribution.
Normal Distribution
A distribution of probabilities that is evenly spread about the mean, indicating that occurrences close to the mean are more common than those further away.
Standard Deviation
A statistic that measures the dispersion or variability of a data set relative to its mean.
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